Alert archive / Tennessee / Mesoscale Discussions in 2004

Mesoscale Discussion 2534

December 10, 20048 states

The Storm Prediction Center issued this mesoscale discussion at Dec 10, 2004, 10:12 AM CST for 8 states. It was in force for 33 min.

The area

The outline as issued.

The facts

Issued
Dec 10, 2004, 10:12 AM CST (16:12 UTC)
Expired
Dec 10, 2004, 10:45 AM CST
In force
33 min
Issued by
the Storm Prediction Center
All 150 counties

DeKalb County, AL, Jackson County, AL, Banks County, GA, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Gilmer County, GA, Gordon County, GA, Habersham County, GA, Hall County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA, Bell County, KY, Clay County, KY, Clinton County, KY, Floyd County, KY, Harlan County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, McCreary County, KY, Perry County, KY, Pike County, KY, Pulaski County, KY, Wayne County, KY, Whitley County, KY, Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Surry County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Yancey County, NC, Greenville County, SC, Oconee County, SC, Pickens County, SC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Grainger County, TN, Greene County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jackson County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Washington County, TN, White County, TN, Bland County, VA, Buchanan County, VA, Carroll County, VA, City of Bristol, VA, City of Galax, VA, City of Norton, VA, City of Radford, VA, Craig County, VA, Dickenson County, VA, Floyd County, VA, Giles County, VA, Grayson County, VA, Lee County, VA, Montgomery County, VA, Pulaski County, VA, Russell County, VA, Scott County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Wythe County, VA, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monroe County, WV, Raleigh County, WV, Summers County, WV, Wyoming County, WV

The radar

The Knoxville radar (KMRX), 6 km from the middle of the area, began a volume at 16:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.2 hours before the alert went out and 292 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2004-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 137 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2004-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
137 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 9, 6:15 PM CSTMesoscale DiscussionSPCRandolph90 min
Dec 9, 10:25 PM CSTTornado WatchSPCHouston4 hr
Dec 9, 8:05 PM CSTTornado WatchSPCBaldwin, Barrow, Bibb, Burke, Butts, Carroll and 51 more6 hr
Dec 9, 9:48 PM CSTMesoscale DiscussionSPCBaker, Ben Hill, Bleckley, Calhoun, Clay, Colquitt and 29 more87 min
Dec 9, 11:07 PM CSTMesoscale DiscussionSPCBaldwin, Barrow, Bibb, Burke, Butts, Carroll and 52 more83 min
Dec 10, 1:11 AM CSTMesoscale DiscussionSPCBaker, Baldwin, Barrow, Ben Hill, Berrien, Bleckley and 100 more64 min
Dec 10, 1:35 AM CSTTornado WatchSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 44 more6 hr
Dec 10, 5:00 AM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 44 more2 hr
Dec 10, 11:53 AM CSTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Fannin, Gilmer, Gordon and 3 more2 hr
Dec 10, 2:20 AM CSTTornado WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 33 more7 hr
Dec 10, 5:18 AM CSTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Chowan, Craven, Cumberland and 31 more117 min

Nearby

Mesoscale Discussions in Tennessee, 2004Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in Georgia, 2004Every mesoscale discussion in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.